Rhyshoiarn
  m.
  
  Old Welsh rīs 'ardor; fiery warrior' + Old Breton (ho)iarn 'iron'.
  
  
  
  
- France
- 
- Latin
- ● 833 Rishoiarn (nom) CartRed VIII
 
Cite as: S.L. Uckelman. "Rhyshoiarn". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2020, no. 1. http://dmnes.org/2020/1/name/Rhyshoiarn.